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[Keiseth]

Moving it down to 3x3 makes a difference. Above ground! >_< Below ground I get 20 FPS. Which is a helluva lot better then 5 FPS, but strange nonetheless.

So I set up digging assignments and hide up in the sunlight. Hrm. Should of done 4x3 to get more of that big mountain I started next to.

EDIT: That was short lived. Now I'm getting ~5 FPS underground, low to the extent that while designating some space to clear, one single arrow keypress results in two. Guh.

[ October 29, 2007: Message edited by: Keiseth ]

[chaswick]

I never was able to run it more than around 30-40 fps (with temp/weather off), but now it seems I get around 20-25 on surface, and 15ish underground with the same settings.  I have dug to the bottom (just to see) and also experience slower framerates on lower levels.  I noticed to that after saving and loading it seemed to be even lower (9 sustained!) but that may have been due to full screen being selected instead of windowed.  My system  is a roughly 3 year old laptop, not a powerhouse but I was hoping to see some performance increases with the new version, not decreases.  Oh well   I hope the people with new systems love the game enough for me too.  It was tolerable at 40, but I don't think I have patience at 15.  Maybe I'll keep plugging away though.

[BurnedToast]

There is definitely some sort of subterranean slowdown going on. I made a new fort on a 3x3 map, and I get 100 fps fine. I go down a level and get ~30.

It seems to be related to how many underground (or maybe undug?) tiles are on the screen. Roughly half my map is mountain, the other half outside. Viewing the outside gives me ~100 fps, moving over (on the same z level) so I can only see 'inside' the mountain is enough to drop it down.

[Name Lips]

This gets my vote for first bug to squash. It nearly makes the game unplayable.

[axus]

Weird thing happened, it turned to autumn, some migrants arrived, and then my frame rate shot up to 70ish

OK its back down again.  Looking at pretty forest ill go to 100fps while the game plays on.

[ October 30, 2007: Message edited by: axus ]

[Name Lips]

My migrants did not change my underground frame rate.

[Griz]

Athlon X2 3800 at 2.4GHz, 2GB RAM, weather/temperature/etc on, vsync off.

default size map gives 100 fps on the surface and drops to 20-30 underground. 4x4 map gives 40 underground. I expect this to become unplayable in the late game so I'm going to restart with 3x3.

[axus]

Yeah, it seems even a small area underground will have low FPS... almost like the lower it is the lower the FPS.

EDIT: yeah FPS seems proportional to the number of unseen spaces on the screen.  Z-level doesn't matter, just how many unseen spaces there are.  Maybe the number is just incorrect?

EDIT: dwarf does move slower when FPS is lower.  solution: more mining?

[ October 30, 2007: Message edited by: axus ]

[ October 30, 2007: Message edited by: axus ]

[oolon1]

I actually have a top of the line CPU, a Core 2 Duo, and I'm having framerate surges.  It seems to oscillate from ~50 to ~100 and results in a jumpy sort of game.  Old version was flawless computation, this version seems to be lagging just slightly.

I'm going to try capping the framerate and see what happens, but hopefully this isn't a big issue.

edit:  the more I play, the more the lags seem to coincide with dwarves moving up and down levels.

[ October 30, 2007: Message edited by: oolon1 ]

[Mzbundifund]

Could the sheer number of creatures be a major cause?  My fortress started with 160+ antmen, ratmen, caveswallowmen, and the like visible on the (u)nit summary screen.

[oolon1]

After another hour of playing, the lag is definitely being caused by dwarves moving up or down levels.  The game locks up very briefly every time a dwarf changes z-level.

[Griz]

quote:Originally posted by oolon1:
<STRONG>After another hour of playing, the lag is definitely being caused by dwarves moving up or down levels.  The game locks up very briefly every time a dwarf changes z-level.</STRONG>

3x3 map
all dwarves currently sleeping
100 fps on surface, 35-45 underground

3x3 is not significantly faster than 4x4 and the map is tiny so I'm probably missing out on chasm/magma/etc.

[Mzbundifund]

Yeah, the game does freeze for a moment when dwarves change z-levels (but not every time), but the real framerate problem seems to be caused by viewing certain z-levels.  Usually those with lots of underground space.

EDIT: It seems unexplored space is a big factor in the framerate.  If we got an updated reveal.exe that worked with this version, perhaps it would be a good temporary workaround?

[ October 30, 2007: Message edited by: Mzbundifund ]

[Toady One]

Yeah, this sounds like the sort of thing that'll be easy to fix once I find the problem location.  It's probably doing something really stupid when it's trying to figure out whether to display sky or ground for an unallocated map area.  Most likely will be fixed for the next version.